Getting first and last element of a LinkedList using Peek Method

 

import java.util.LinkedList;

public class LinkedListPeek {

public static void main(String[] args) {

LinkedList<String> ll = new LinkedList<>();

LinkedList<String> ll1 = new LinkedList<>();

//addding element to linkedlist ll

ll.add("Ishu");

ll.add("Nishu");

ll.add("Naina");

ll.add("Nishu");

ll.add("Shiksha");

System.out.println("The original list is : " + ll);

System.out.println(ll.peek()); //return first element

System.out.println(ll.peekFirst()); //return first element

System.out.println(ll.peekLast()); //return last element

//return null as the LinkedList is empty

System.out.println(ll1.peek());

System.out.println(ll1.peekFirst());

System.out.println(ll1.peekLast());

}

}